Wind wheel blade with antiicing and deicing functions

Abstract

The invention relates to a wind wheel blade with antiicing and deicing functions, and the wind wheel blade comprises a shell, and a shear web capable of dividing the interior of the shell into a leading edge cavity and a trailing edge cavity, wherein a heating device is arranged in the leading edge cavity and consists of a heating type air blower arranged close to the root of the blade, and an insulating pipeline connected with the air outlet of the heating type air blower; the insulating pipeline is provided with a flute-shaped pipe with a gas orifice at the corresponding sections from the middle of the blade to the blade tip, and the opening direction of the gas orifice faces to the leading edge of the blade; and air flow exhausted by the gas orifice is circulated to the air inlet of the heating type air blower. The wind wheel blade is reasonable in pipe structure form and distribution mode, hot air flow focally heats the leading edge of the blade, especially the blade shell from the middle of the blade to the blade tip, so that the recycling of the hot air flow can be realized, and the utilization rate of heat can be improved.

Description

Technical field [0001] The invention relates to a wind turbine blade of a wind power generating set, in particular to a wind turbine blade with anti-icing and deicing capabilities. Background technique [0002] During the operation of the wind turbine, the blades of the wind turbine will be subjected to various harsh environments. Among them, the ice on the surface of the blade in the cold environment is the main factor that disturbs the operation of the wind turbine in winter. The icing of the wind turbine blades will reduce the power generation of the wind turbine or even stop. The unbalanced mass of the blades will increase the fatigue damage at the bottom of the tower after the icing. The ice on the rotating blades falling from the height will cause hidden dangers, so prevent Blade icing or rapid deicing after blade icing is a hot spot in wind power technology research. [0003] According to the relevant regulations of the GL specification, the area where the icing phenomenon ...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN201367977 Y guides the hot airflow through the pipeline to heat the blade, and the hot airflow is discharged through the through hole at the blade tip, but this method does not recycle the hot air, and the heat utilization rate is not high

[0005] Considering the structure of the blade, the space of the cavity at the leading edge of the blade near the blade tip is narrow, and it is not possible to install complex airflow pipelines; while the space of the cavity at the leading edge of the blade near the root of the blade is too large, the heating effect may not be obvious or The problem of complex pipeline arrangement and fixing method

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